Consciousness and Cognition
August 1, 2017
Jaan Aru, Talis Bachmann
42 citations
Conscious experience is modulated by attention and expectation, yet is believed to be independent of attention. The experiments on iconic memory (IM) are usually taken as support for this claim. However, a recent experiment demonstrated that when attention is diverted away from the IM letter display subjects fail to see the absence of IM letters. Here we contribute to the ongoing debate by...
Frontiers in Psychology
February 2, 2017
Jaan Aru, Talis Bachmann
Mental information processing includes both unconscious and conscious modes and there are transitions between these two. The content of subjective experience can emerge from preconscious content, but an opposite process of loss of conscious content or its decay from subjective experience is an inevitable reality as well. Both ways of transition on the border between unconscious and conscious...
Neuroscience of Consciousness
2016
Jaan Aru, Renate Rutiku, Michael Wibral et al.
Constructive theories of brain function such as predictive coding posit that prior knowledge affects our experience of the world quickly and directly. However, it is yet unknown how swiftly prior knowledge impacts the neural processes giving rise to conscious experience. Here we used an experimental paradigm where prior knowledge augmented perception and measured the timing of this effect with...
Consciousness and Cognition
September 2015
Mihkel Stamm, Jaan Aru, Renate Rutiku et al.
Neural correlates of conscious vs unconscious states can be studied by contrasting EEG markers of brain activity between those two states. Here, a task-free experimental setup was used to study the state dependent effects of occipital transcranial magnetic stimulation (TMS). EEG responses to single and paired pulse TMS with an inter-stimulus-interval (ISI) of 100 ms were investigated under...
Neuroscience
July 9, 2015
Renate Rutiku, M Martin, Talis Bachmann et al.
A common scientific strategy toward understanding consciousness is to study neural correlates of consciousness (NCC) for a particular conscious percept. This can be done by contrasting conditions in which subjects are aware and unaware of a particular visual stimulus. However, recent findings have been contradictory and this approach appears not to reveal only the NCC, but also the...
Advances in Consciousness Research
June 17, 2015
Jaan Aru, Talis Bachmann, Wolf Singer et al.
It has been proposed that one key step for solving the mystery of consciousness is to locate the neural correlates of consciousness (NCC). The experimental paradigms for revealing the NCC have commonly applied the contrast between conditions with and without conscious perception. However, such contrast does not exclusively reveal the neural processes directly related to conscious experience of...
Journal of Neuroscience
October 24, 2012
Jaan Aru, Nikolai Axmacher, Anne T A Do Lam et al.
Which neural processes underlie our conscious experience? One theoretical view argues that the neural correlates of consciousness (NCC) reside in local activity in sensory cortices. Accordingly, local category-specific gamma band responses in visual cortex correlate with conscious perception. However, as most studies manipulated conscious perception by altering the amount of sensory evidence,...
Neuroscience & Biobehavioral Reviews
December 17, 2011
Jaan Aru, Talis Bachmann, Wolf Singer et al.
612 citations
Solving the problem of consciousness remains one of the biggest challenges in modern science. One key step towards understanding consciousness is to empirically narrow down neural processes associated with the subjective experience of a particular content. To unravel these neural correlates of consciousness (NCC) a common scientific strategy is to compare perceptual conditions in which...
Neuroscience Letters
February 6, 2009
Jaan Aru, Talis Bachmann
Boost up gamma-band neuronal oscillations have been interpreted as a correlate of pertinent stimulus awareness. The validity of this observation-based conclusion can be rigorously tested if the basic methodological rule of investigating neural correlates of consciousness (NCC) is followed: the varying contents of consciousness should be contrasted with invariant stimulation. We asked whether...